Changes to examples/foreachq2.m4 [branch-1_4]

[Eric Blake]

CVSROOT:        /sources/m4
Module name:    m4
Branch:         branch-1_4
Changes by:     Eric Blake <ericb>      06/10/21 02:55:56

Index: examples/foreachq2.m4
===================================================================
RCS file: examples/foreachq2.m4
diff -N examples/foreachq2.m4
--- /dev/null   1 Jan 1970 00:00:00 -0000
+++ examples/foreachq2.m4       21 Oct 2006 02:55:56 -0000      1.1.2.1
@@ -0,0 +1,10 @@
+include(`quote.m4')dnl
+divert(`-1')
+# foreachq(x, `item_1, item_2, ..., item_n', stmt)
+#   quoted list, improved version
+define(`foreachq', `pushdef(`$1')_foreachq($@)popdef(`$1')')
+define(`_arg1q', ``$1'')
+define(`_rest', `ifelse(`$#', `1', `', `dquote(shift($@))')')
+define(`_foreachq', `ifelse(`$2', `', `',
+  `define(`$1', _arg1q($2))$3`'$0(`$1', _rest($2), `$3')')')
+divert`'dnl